Power Circuit Breakers & Insulated Case Circuit Breakers
27.1-2
Power Circuit Breakers
June 2006 Sheet 1094
Low Voltage Power Circuit Breakers — Magnum DS and SB
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All Magnum Breaker Types — Features, Benefits and Functions
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200 kA interruption ratings with current limiting performance and low current let-through to reduce damaging energy to downstream equipment at high fault levels. Withstand ratings up to 100 kA to maximize system coordination and selectivity. Three physical frame sizes (Narrow, Standard and Double) to promote breaker application in compact modular enclosures. Continuous current ratings from 800 to 6000 A with 100% rating at 40ºC and no derating on most ratings up to 50ºC. Fixed breaker mounting configurations with horizontal and optional vertical and front connected terminal connections. Drawout breaker mounting configurations with cassette and optional safety shutters. 3- and 4-pole breaker configurations. Through-the-door design for human interface with the breaker compartment door closed. Two-step Tw o-step stored energy mechanism for manually and electrically operated breakers. Digitrip RMS Trip Unit family protection with four models each providing increasing levels of protection and feature options for coordination, information and diagnostics: ❑ Microprocessor-based rms sensing
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Basic to programmable overcurrent protection and alarms
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Local display for information, status and diagnostics
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Ampere, voltage and power metering
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Power quality, harmonics and waveform capture
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Communications with translators to common protocols
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Zone selective interlocking for improved coordination
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ARMs Technologies
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Breaker health monitoring
Through-the-Door Design for Human Interface with the Breaker Compartment Door Closed
for arc flash reduction
Field-installable accessories (UL listed) common across the breaker frames and designed to be easily installed in the field to service or modify the breaker at the point of use. Secondary terminal contacts mounted at the top front of the breaker and away from the primary voltage areas for improved safety and access. Finger-proof terminal blocks accommodate ring-tongue or spade type terminals as standard.
39 40 41 42 43 High Technology Microprocessor-Based Microprocessor-Based Digitrip RMS 1150+ Trip Units are Available With Advanced Features Like Programmable Overcurrent Settings, Power Metering, Power Quality and Communications For more information visit:
www.EatonElectrical.com
CA08104001E
Power Circuit Breakers & Insulated Case Circuit Breakers June 2006
Power Circuit Breakers
27.1-3
Sheet 1095
Low Voltage Power Circuit Breakers — Magnum DS an d SB
Breaker Features on Front Cover
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The controls and indicators are functionally grouped on the breaker faceplate to optimize the human interface, visibility, and ease of use. For maximum safety, a modern, through-thedoor design permits access to the breaker levering system, trip unit, controls and indicators with the door closed.
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Spring Release Device (SR)
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Undervoltage Release (UVR) Device or Second STA
Digitrip RMS Trip Unit (Model 520M Shown) Protected by Clear Cover
Contact Status Indicators: ❑
OPEN — Green
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CLOSED — Red
Magnum DS Drawout Breaker
Spring Status Indicators: ❑
Charged — Yellow
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Discharged — White
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Accessory Viewing Windows for: Shunt Trip Attachment (STA)
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Mechanical Trip Flag Pop-out Indicator (Optional) — Red
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Push OFF (Open) Pushbutton —Red Push ON (Close) Pushbutton — Green
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Manual Spring Charging Handle for Manually Charging the Stored Energy Springs
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Mechanical Operations Counter (Optional) Key Off Lock (Optional)
Accessory Viewing Windows Visibly Confirm the Breaker Shunt Trip, Spring Release, and UVR Installation and Their Control Voltage Rating Drawout Breaker Levering Can be Accomplished With the Compartment Door Closed Without the Need for a Special Levering Tool
Padlockable Levering Device Shutter for Drawout Breakers Color-Coded Position Indicator for Drawout Breakers: ❑
CONNECT — Red
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TEST — Yellow
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DISCONNECT — Green
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Through-the-Door Design for Human Interface with the Breaker Compartment Door Closed, for Example, Manually Charging the Stored Energy Springs
CA08104001E
For more information visit: www.EatonElectrical.com
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27.1-4
Power Circuit Breakers & Insulated Case Circuit Breakers
Power Circuit Breakers
June 2006 Sheet 1096
Low Voltage Power Circuit Breakers — Magnum DS and SB
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Breaker Internal Features
Breaker Accessory Mounting Deck with Three Positions for Mounting: ❑
Shunt Trip Attachment (STA)
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Spring Release Device (SR)
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Undervoltage Release (UVR) Device or Second STA
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Spring Charging Motor (Optional) for Electrically Charging the Stored Energy Springs
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Secondary Terminal Points for Internal Breaker Wiring Connections
Digitrip RMS Trip Unit (Model 1150+ Shown)
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Manual Spring Charging Handle for Manually Charging the Stored Energy Springs Padlockable Levering Device Shutter for Drawout Breakers
Magnum Drawout Breaker Front View With Front Cover Removed Showing Easy Access to the Breaker Internal Devices
Color-Coded Position Indicator for Drawout Breakers: ❑
CONNECT — Red
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TEST — Yellow
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DISCONNECT — Green
Secondary Contact Blocks for Connection to External Cell Control Wiring Removable Arc Chute Covers for Easy Access to Breaker Main Contacts Primary Finger Cluster Disconnecting Contacts for Drawout Breaker are Mounted on the Breaker Element (Not in the Breaker Compartment) for Ease of Access for Inspection and Maintenance Current Sensor Viewing Windows to View and Confirm Breaker Sensor Rating Rigid Frame Housing (Thermoset Composite Resin) Providing Increased Strength and Durability
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Magnum circuit breakers are designed for ease of access for inspection, modification and maintenance at the point of use. The breaker front cover is easily removed with four captive bolts, revealing the modular internal breaker features.
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Magnum Drawout Breaker Rear View Showing Primary Disconnecting Finger Clusters Mounted on the Breaker for Ease of Inspection
